Immunoglobulin J Chain

**Semantic type:** Amino Acid, Peptide, or Protein

**Definition:** Immunoglobulin J chain (159 aa, ~18 kDa) is encoded by the human JCHAIN gene. This protein plays a role in the joining of antibody structures.

**Synonyms:** - IgJ Chain - J Chain - JCHAIN - Joining Chain of Multimeric IgA and IgM